Multi-resolution borehole profiling

Details Multi-resolution borehole profiling Multi-resolution borehole profiling

2011-06-28

2011-06-28

Fitzgerald, John (Department: 2856)

Measuring and testing

Borehole or drilling

Formation logging

C073S152450, C702S009000

Reexamination Certificate

active

07966874

ABSTRACT:
Harmonics and subharmonics of acoustic measurements made during rotation of a sensor on a downhole are processed to estimate the location of the imager, and size and shape of the borehole. A piecewise elliptical fitting procedure may be used. These estimates may be used to correct measurements made by a standoff-sensitive formation evaluation sensor such as a neutron porosity tool.

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